I had good success with my BCD996P2 using a low cost yagi available on Amazon for $25 us
698-894Mhz Yagi Antenna
UPC 700358996979
By experimenting with mounting height and the direction the yagi is pointing chances are good you can null out one of the transmitting towers. One thing to note is in this case higher is not better. What you are trying to do is make one of the towers dominate and let FM capture do the rest.